![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/pinba.c b/src/pinba.c
--- /dev/null
+++ b/src/pinba.c
@@ -0,0 +1,755 @@
+/**
+ * collectd - src/pinba.c (based on code from pinba_engine 0.0.5)
+ * Copyright (c) 2007-2009 Antony Dovgal
+ * Copyright (C) 2010 Phoenix Kayo
+ * Copyright (C) 2010 Florian Forster
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; only version 2 of the License is applicable.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors:
+ * Antony Dovgal <tony at daylessday.org>
+ * Phoenix Kayo <kayo.k11.4 at gmail.com>
+ * Florian Forster <octo at collectd.org>
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include "configfile.h"
+
+#include <pthread.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <poll.h>
+
+#include "pinba.pb-c.h"
+
+/* AIX doesn't have MSG_DONTWAIT */
+#ifndef MSG_DONTWAIT
+# define MSG_DONTWAIT MSG_NONBLOCK
+#endif
+
+/*
+ * Defines
+ */
+#ifndef PINBA_UDP_BUFFER_SIZE
+# define PINBA_UDP_BUFFER_SIZE 65536
+#endif
+
+#ifndef PINBA_DEFAULT_NODE
+# define PINBA_DEFAULT_NODE "::0"
+#endif
+
+#ifndef PINBA_DEFAULT_SERVICE
+# define PINBA_DEFAULT_SERVICE "30002"
+#endif
+
+#ifndef PINBA_MAX_SOCKETS
+# define PINBA_MAX_SOCKETS 16
+#endif
+
+/*
+ * Private data structures
+ */
+/* {{{ */
+struct pinba_socket_s
+{
+ struct pollfd fd[PINBA_MAX_SOCKETS];
+ nfds_t fd_num;
+};
+typedef struct pinba_socket_s pinba_socket_t;
+
+/* Fixed point counter value. n is the decimal part multiplied by 10^9. */
+struct float_counter_s
+{
+ uint64_t i;
+ uint64_t n; /* nanos */
+};
+typedef struct float_counter_s float_counter_t;
+
+struct pinba_statnode_s
+{
+ /* collector name, used as plugin instance */
+ char *name;
+
+ /* query data */
+ char *host;
+ char *server;
+ char *script;
+
+ derive_t req_count;
+
+ float_counter_t req_time;
+ float_counter_t ru_utime;
+ float_counter_t ru_stime;
+
+ derive_t doc_size;
+ gauge_t mem_peak;
+};
+typedef struct pinba_statnode_s pinba_statnode_t;
+/* }}} */
+
+/*
+ * Module global variables
+ */
+/* {{{ */
+static pinba_statnode_t *stat_nodes = NULL;
+static unsigned int stat_nodes_num = 0;
+static pthread_mutex_t stat_nodes_lock;
+
+static char *conf_node = NULL;
+static char *conf_service = NULL;
+
+static _Bool collector_thread_running = 0;
+static _Bool collector_thread_do_shutdown = 0;
+static pthread_t collector_thread_id;
+/* }}} */
+
+/*
+ * Functions
+ */
+static void float_counter_add (float_counter_t *fc, float val) /* {{{ */
+{
+ uint64_t tmp;
+
+ if (val < 0.0)
+ return;
+
+ tmp = (uint64_t) val;
+ val -= (double) tmp;
+
+ fc->i += tmp;
+ fc->n += (uint64_t) ((val * 1000000000.0) + .5);
+
+ if (fc->n >= 1000000000)
+ {
+ fc->i += 1;
+ fc->n -= 1000000000;
+ assert (fc->n < 1000000000);
+ }
+} /* }}} void float_counter_add */
+
+static derive_t float_counter_get (const float_counter_t *fc, /* {{{ */
+ uint64_t factor)
+{
+ derive_t ret;
+
+ ret = (derive_t) (fc->i * factor);
+ ret += (derive_t) (fc->n / (1000000000 / factor));
+
+ return (ret);
+} /* }}} derive_t float_counter_get */
+
+static void strset (char **str, const char *new) /* {{{ */
+{
+ char *tmp;
+
+ if (!str || !new)
+ return;
+
+ tmp = strdup (new);
+ if (tmp == NULL)
+ return;
+
+ sfree (*str);
+ *str = tmp;
+} /* }}} void strset */
+
+static void service_statnode_add(const char *name, /* {{{ */
+ const char *host,
+ const char *server,
+ const char *script)
+{
+ pinba_statnode_t *node;
+
+ node = realloc (stat_nodes,
+ sizeof (*stat_nodes) * (stat_nodes_num + 1));
+ if (node == NULL)
+ {
+ ERROR ("pinba plugin: realloc failed");
+ return;
+ }
+ stat_nodes = node;
+
+ node = stat_nodes + stat_nodes_num;
+ memset (node, 0, sizeof (*node));
+
+ /* reset strings */
+ node->name = NULL;
+ node->host = NULL;
+ node->server = NULL;
+ node->script = NULL;
+
+ node->mem_peak = NAN;
+
+ /* fill query data */
+ strset (&node->name, name);
+ strset (&node->host, host);
+ strset (&node->server, server);
+ strset (&node->script, script);
+
+ /* increment counter */
+ stat_nodes_num++;
+} /* }}} void service_statnode_add */
+
+/* Copy the data from the global "stat_nodes" list into the buffer pointed to
+ * by "res", doing the derivation in the process. Returns the next index or
+ * zero if the end of the list has been reached. */
+static unsigned int service_statnode_collect (pinba_statnode_t *res, /* {{{ */
+ unsigned int index)
+{
+ pinba_statnode_t *node;
+
+ if (stat_nodes_num == 0)
+ return 0;
+
+ /* begin collecting */
+ if (index == 0)
+ pthread_mutex_lock (&stat_nodes_lock);
+
+ /* end collecting */
+ if (index >= stat_nodes_num)
+ {
+ pthread_mutex_unlock (&stat_nodes_lock);
+ return 0;
+ }
+
+ node = stat_nodes + index;
+ memcpy (res, node, sizeof (*res));
+
+ /* reset node */
+ node->mem_peak = NAN;
+
+ return (index + 1);
+} /* }}} unsigned int service_statnode_collect */
+
+static void service_statnode_process (pinba_statnode_t *node, /* {{{ */
+ Pinba__Request* request)
+{
+ node->req_count++;
+
+ float_counter_add (&node->req_time, request->request_time);
+ float_counter_add (&node->ru_utime, request->ru_utime);
+ float_counter_add (&node->ru_stime, request->ru_stime);
+
+ node->doc_size += request->document_size;
+
+ if (isnan (node->mem_peak)
+ || (node->mem_peak < ((gauge_t) request->memory_peak)))
+ node->mem_peak = (gauge_t) request->memory_peak;
+
+} /* }}} void service_statnode_process */
+
+static void service_process_request (Pinba__Request *request) /* {{{ */
+{
+ unsigned int i;
+
+ pthread_mutex_lock (&stat_nodes_lock);
+
+ for (i = 0; i < stat_nodes_num; i++)
+ {
+ if ((stat_nodes[i].host != NULL)
+ && (strcmp (request->hostname, stat_nodes[i].host) != 0))
+ continue;
+
+ if ((stat_nodes[i].server != NULL)
+ && (strcmp (request->server_name, stat_nodes[i].server) != 0))
+ continue;
+
+ if ((stat_nodes[i].script != NULL)
+ && (strcmp (request->script_name, stat_nodes[i].script) != 0))
+ continue;
+
+ service_statnode_process(&stat_nodes[i], request);
+ }
+
+ pthread_mutex_unlock(&stat_nodes_lock);
+} /* }}} void service_process_request */
+
+static int pb_del_socket (pinba_socket_t *s, /* {{{ */
+ nfds_t index)
+{
+ if (index >= s->fd_num)
+ return (EINVAL);
+
+ close (s->fd[index].fd);
+ s->fd[index].fd = -1;
+
+ /* When deleting the last element in the list, no memmove is necessary. */
+ if (index < (s->fd_num - 1))
+ {
+ memmove (&s->fd[index], &s->fd[index + 1],
+ sizeof (s->fd[0]) * (s->fd_num - (index + 1)));
+ }
+
+ s->fd_num--;
+ return (0);
+} /* }}} int pb_del_socket */
+
+static int pb_add_socket (pinba_socket_t *s, /* {{{ */
+ const struct addrinfo *ai)
+{
+ int fd;
+ int tmp;
+ int status;
+
+ if (s->fd_num == PINBA_MAX_SOCKETS)
+ {
+ WARNING ("pinba plugin: Sorry, you have hit the built-in limit of "
+ "%i sockets. Please complain to the collectd developers so we can "
+ "raise the limit.", PINBA_MAX_SOCKETS);
+ return (-1);
+ }
+
+ fd = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+ if (fd < 0)
+ {
+ char errbuf[1024];
+ ERROR ("pinba plugin: socket(2) failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (0);
+ }
+
+ tmp = 1;
+ status = setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof (tmp));
+ if (status != 0)
+ {
+ char errbuf[1024];
+ WARNING ("pinba plugin: setsockopt(SO_REUSEADDR) failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ }
+
+ status = bind (fd, ai->ai_addr, ai->ai_addrlen);
+ if (status != 0)
+ {
+ char errbuf[1024];
+ ERROR ("pinba plugin: bind(2) failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (0);
+ }
+
+ s->fd[s->fd_num].fd = fd;
+ s->fd[s->fd_num].events = POLLIN | POLLPRI;
+ s->fd[s->fd_num].revents = 0;
+ s->fd_num++;
+
+ return (0);
+} /* }}} int pb_add_socket */
+
+static pinba_socket_t *pinba_socket_open (const char *node, /* {{{ */
+ const char *service)
+{
+ pinba_socket_t *s;
+ struct addrinfo *ai_list;
+ struct addrinfo *ai_ptr;
+ struct addrinfo ai_hints;
+ int status;
+
+ memset (&ai_hints, 0, sizeof (ai_hints));
+ ai_hints.ai_flags = AI_PASSIVE;
+ ai_hints.ai_family = AF_UNSPEC;
+ ai_hints.ai_socktype = SOCK_DGRAM;
+ ai_hints.ai_addr = NULL;
+ ai_hints.ai_canonname = NULL;
+ ai_hints.ai_next = NULL;
+
+ if (node == NULL)
+ node = PINBA_DEFAULT_NODE;
+
+ if (service == NULL)
+ service = PINBA_DEFAULT_SERVICE;
+
+ ai_list = NULL;
+ status = getaddrinfo (node, service,
+ &ai_hints, &ai_list);
+ if (status != 0)
+ {
+ ERROR ("pinba plugin: getaddrinfo(3) failed: %s",
+ gai_strerror (status));
+ return (NULL);
+ }
+ assert (ai_list != NULL);
+
+ s = malloc (sizeof (*s));
+ if (s == NULL)
+ {
+ freeaddrinfo (ai_list);
+ ERROR ("pinba plugin: malloc failed.");
+ return (NULL);
+ }
+ memset (s, 0, sizeof (*s));
+
+ for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
+ {
+ status = pb_add_socket (s, ai_ptr);
+ if (status != 0)
+ break;
+ } /* for (ai_list) */
+
+ freeaddrinfo (ai_list);
+
+ if (s->fd_num < 1)
+ {
+ WARNING ("pinba plugin: Unable to open socket for address %s.", node);
+ sfree (s);
+ s = NULL;
+ }
+
+ return (s);
+} /* }}} pinba_socket_open */
+
+static void pinba_socket_free (pinba_socket_t *socket) /* {{{ */
+{
+ nfds_t i;
+
+ if (!socket)
+ return;
+
+ for (i = 0; i < socket->fd_num; i++)
+ {
+ if (socket->fd[i].fd < 0)
+ continue;
+ close (socket->fd[i].fd);
+ socket->fd[i].fd = -1;
+ }
+
+ sfree(socket);
+} /* }}} void pinba_socket_free */
+
+static int pinba_process_stats_packet (const uint8_t *buffer, /* {{{ */
+ size_t buffer_size)
+{
+ Pinba__Request *request;
+
+ request = pinba__request__unpack (NULL, buffer_size, buffer);
+
+ if (!request)
+ return (-1);
+
+ service_process_request(request);
+ pinba__request__free_unpacked (request, NULL);
+
+ return (0);
+} /* }}} int pinba_process_stats_packet */
+
+static int pinba_udp_read_callback_fn (int sock) /* {{{ */
+{
+ uint8_t buffer[PINBA_UDP_BUFFER_SIZE];
+ size_t buffer_size;
+ int status;
+
+ while (42)
+ {
+ buffer_size = sizeof (buffer);
+ status = recvfrom (sock, buffer, buffer_size - 1, MSG_DONTWAIT, /* from = */ NULL, /* from len = */ 0);
+ if (status < 0)
+ {
+ char errbuf[1024];
+
+ if ((errno == EINTR)
+#ifdef EWOULDBLOCK
+ || (errno == EWOULDBLOCK)
+#endif
+ || (errno == EAGAIN))
+ {
+ continue;
+ }
+
+ WARNING("pinba plugin: recvfrom(2) failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
+ else if (status == 0)
+ {
+ DEBUG ("pinba plugin: recvfrom(2) returned unexpected status zero.");
+ return (-1);
+ }
+ else /* if (status > 0) */
+ {
+ assert (((size_t) status) < buffer_size);
+ buffer_size = (size_t) status;
+ buffer[buffer_size] = 0;
+
+ status = pinba_process_stats_packet (buffer, buffer_size);
+ if (status != 0)
+ DEBUG("pinba plugin: Parsing packet failed.");
+ return (status);
+ }
+ } /* while (42) */
+
+ /* not reached */
+ assert (23 == 42);
+ return (-1);
+} /* }}} void pinba_udp_read_callback_fn */
+
+static int receive_loop (void) /* {{{ */
+{
+ pinba_socket_t *s;
+
+ s = pinba_socket_open (conf_node, conf_service);
+ if (s == NULL)
+ {
+ ERROR ("pinba plugin: Collector thread is exiting prematurely.");
+ return (-1);
+ }
+
+ while (!collector_thread_do_shutdown)
+ {
+ int status;
+ nfds_t i;
+
+ if (s->fd_num < 1)
+ break;
+
+ status = poll (s->fd, s->fd_num, /* timeout = */ 1000);
+ if (status == 0) /* timeout */
+ {
+ continue;
+ }
+ else if (status < 0)
+ {
+ char errbuf[1024];
+
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+
+ ERROR ("pinba plugin: poll(2) failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ pinba_socket_free (s);
+ return (-1);
+ }
+
+ for (i = 0; i < s->fd_num; i++)
+ {
+ if (s->fd[i].revents & (POLLERR | POLLHUP | POLLNVAL))
+ {
+ pb_del_socket (s, i);
+ i--;
+ }
+ else if (s->fd[i].revents & (POLLIN | POLLPRI))
+ {
+ pinba_udp_read_callback_fn (s->fd[i].fd);
+ }
+ } /* for (s->fd) */
+ } /* while (!collector_thread_do_shutdown) */
+
+ pinba_socket_free (s);
+ s = NULL;
+
+ return (0);
+} /* }}} int receive_loop */
+
+static void *collector_thread (void *arg) /* {{{ */
+{
+ receive_loop ();
+
+ memset (&collector_thread_id, 0, sizeof (collector_thread_id));
+ collector_thread_running = 0;
+ pthread_exit (NULL);
+ return (NULL);
+} /* }}} void *collector_thread */
+
+/*
+ * Plugin declaration section
+ */
+static int pinba_config_view (const oconfig_item_t *ci) /* {{{ */
+{
+ char *name = NULL;
+ char *host = NULL;
+ char *server = NULL;
+ char *script = NULL;
+ int status;
+ int i;
+
+ status = cf_util_get_string (ci, &name);
+ if (status != 0)
+ return (status);
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if (strcasecmp ("Host", child->key) == 0)
+ status = cf_util_get_string (child, &host);
+ else if (strcasecmp ("Server", child->key) == 0)
+ status = cf_util_get_string (child, &server);
+ else if (strcasecmp ("Script", child->key) == 0)
+ status = cf_util_get_string (child, &script);
+ else
+ {
+ WARNING ("pinba plugin: Unknown config option: %s", child->key);
+ status = -1;
+ }
+
+ if (status != 0)
+ break;
+ }
+
+ if (status == 0)
+ service_statnode_add (name, host, server, script);
+
+ sfree (name);
+ sfree (host);
+ sfree (server);
+ sfree (script);
+
+ return (status);
+} /* }}} int pinba_config_view */
+
+static int plugin_config (oconfig_item_t *ci) /* {{{ */
+{
+ int i;
+
+ /* The lock should not be necessary in the config callback, but let's be
+ * sure.. */
+ pthread_mutex_lock (&stat_nodes_lock);
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+
+ if (strcasecmp ("Address", child->key) == 0)
+ cf_util_get_string (child, &conf_node);
+ else if (strcasecmp ("Port", child->key) == 0)
+ cf_util_get_service (child, &conf_service);
+ else if (strcasecmp ("View", child->key) == 0)
+ pinba_config_view (child);
+ else
+ WARNING ("pinba plugin: Unknown config option: %s", child->key);
+ }
+
+ pthread_mutex_unlock(&stat_nodes_lock);
+
+ return (0);
+} /* }}} int pinba_config */
+
+static int plugin_init (void) /* {{{ */
+{
+ int status;
+
+ if (stat_nodes == NULL)
+ {
+ /* Collect the "total" data by default. */
+ service_statnode_add ("total",
+ /* host = */ NULL,
+ /* server = */ NULL,
+ /* script = */ NULL);
+ }
+
+ if (collector_thread_running)
+ return (0);
+
+ status = plugin_thread_create (&collector_thread_id,
+ /* attrs = */ NULL,
+ collector_thread,
+ /* args = */ NULL);
+ if (status != 0)
+ {
+ char errbuf[1024];
+ ERROR ("pinba plugin: pthread_create(3) failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
+ collector_thread_running = 1;
+
+ return (0);
+} /* }}} */
+
+static int plugin_shutdown (void) /* {{{ */
+{
+ if (collector_thread_running)
+ {
+ int status;
+
+ DEBUG ("pinba plugin: Shutting down collector thread.");
+ collector_thread_do_shutdown = 1;
+
+ status = pthread_join (collector_thread_id, /* retval = */ NULL);
+ if (status != 0)
+ {
+ char errbuf[1024];
+ ERROR ("pinba plugin: pthread_join(3) failed: %s",
+ sstrerror (status, errbuf, sizeof (errbuf)));
+ }
+
+ collector_thread_running = 0;
+ collector_thread_do_shutdown = 0;
+ } /* if (collector_thread_running) */
+
+ return (0);
+} /* }}} int plugin_shutdown */
+
+static int plugin_submit (const pinba_statnode_t *res) /* {{{ */
+{
+ value_t value;
+ value_list_t vl = VALUE_LIST_INIT;
+
+ vl.values = &value;
+ vl.values_len = 1;
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "pinba", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, res->name, sizeof (vl.plugin_instance));
+
+ value.derive = res->req_count;
+ sstrncpy (vl.type, "total_requests", sizeof (vl.type));
+ plugin_dispatch_values (&vl);
+
+ value.derive = float_counter_get (&res->req_time, /* factor = */ 1000);
+ sstrncpy (vl.type, "total_time_in_ms", sizeof (vl.type));
+ plugin_dispatch_values (&vl);
+
+ value.derive = res->doc_size;
+ sstrncpy (vl.type, "total_bytes", sizeof (vl.type));
+ plugin_dispatch_values (&vl);
+
+ value.derive = float_counter_get (&res->ru_utime, /* factor = */ 100);
+ sstrncpy (vl.type, "cpu", sizeof (vl.type));
+ sstrncpy (vl.type_instance, "user", sizeof (vl.type_instance));
+ plugin_dispatch_values (&vl);
+
+ value.derive = float_counter_get (&res->ru_stime, /* factor = */ 100);
+ sstrncpy (vl.type, "cpu", sizeof (vl.type));
+ sstrncpy (vl.type_instance, "system", sizeof (vl.type_instance));
+ plugin_dispatch_values (&vl);
+
+ value.gauge = res->mem_peak;
+ sstrncpy (vl.type, "memory", sizeof (vl.type));
+ sstrncpy (vl.type_instance, "peak", sizeof (vl.type_instance));
+ plugin_dispatch_values (&vl);
+
+ return (0);
+} /* }}} int plugin_submit */
+
+static int plugin_read (void) /* {{{ */
+{
+ unsigned int i=0;
+ pinba_statnode_t data;
+
+ while ((i = service_statnode_collect (&data, i)) != 0)
+ {
+ plugin_submit (&data);
+ }
+
+ return 0;
+} /* }}} int plugin_read */
+
+void module_register (void) /* {{{ */
+{
+ plugin_register_complex_config ("pinba", plugin_config);
+ plugin_register_init ("pinba", plugin_init);
+ plugin_register_read ("pinba", plugin_read);
+ plugin_register_shutdown ("pinba", plugin_shutdown);
+} /* }}} void module_register */
+
+/* vim: set sw=2 sts=2 et fdm=marker : */